====== Server & desktop backup solutions ======


===== rsync =====

Follow our [[en:server:services:rsync|rsync]] tutorial first.

The snapshots are stored locally and remotely via rsync daemon. 

<alert type="danger" icon="fa fa-warning">This backup solution is only recommended for an internal network. Use an encrypted backup method with [[en:backup:server#borg|borg]] instead.</alert>

==== Dependencies ====

The script needs ''inetutils'' for ''hostname'' command.

<code>
pacman -S inetutils
</code>


==== Credentials ====

<code>
echo "$password" > /etc/rsyncd.password
chmod 400 /etc/rsyncd.password
</code>

==== Script ====

Add your details for ''DAEMONUSER=""'' and ''DAEMONHOST=""''.

<code>
nano /root/rsnapbackup.sh
</code>
<code>
#!/bin/sh

## Based on:
## my own rsync-based snapshot-style backup procedure
## (cc) marcio rps AT gmail.com

# config vars

SRC="/"
SNAP="/root/backup/"
OPTS="--rltogiPhv --stats --delay-updates --delete --chmod=a-w"
EXCL="--exclude-from=/root/backup-filter.rule"
DAEMONUSER=""
DAEMONHOST=""
HOSTNAME=$(hostname)
MINCHANGES=1

# run this process with real low priority

ionice -c 3 -p $$
renice +12  -p $$

# List and save installed packages
pacman -Qn | awk '{ print $1 }' > /root/pkglist

# sync

rsync $OPTS $EXCL $SRC $SNAP/latest >> $SNAP/rsync.log

# check if enough has changed and if so
# make a hardlinked copy named as the date

COUNT=$( wc -l $SNAP/rsync.log|cut -d" " -f1 )
if [ $COUNT -gt $MINCHANGES ] ; then
        DATETAG=$(date +%Y-%m-%d-%H:%M)
        if [ ! -e $SNAP/$DATETAG ] ; then
                cp -al $SNAP/latest $SNAP/$DATETAG
                chmod u+w $SNAP/$DATETAG
                mv $SNAP/rsync.log $SNAP/$DATETAG
               chmod u-w $SNAP/$DATETAG
         fi
fi

rsync -avAXHP --delete --password-file=/etc/rsyncd.password $SNAP rsync://$DAEMONUSER@$DAEMONHOST/archive/backup/$HOSTNAME
</code>
<code>
chmod +x /root/rsnapbackup.sh
</code>


== Exclude folder and files ==

This is an example. Add anything you don't need to backup. And change home ''$USER''.

<code>
nano /root/backup-filter.rule
</code>
<code>
/dev/*
/proc/*
/sys/*
/tmp/*
/run/*
/mnt/*
/media/*
/lost+found
# root user
/root/backup/*
/root/.cache/*
# Home user
/home/$USER/.cache/*
</code>


==== Crontab ====

Follow our [[en:server:services:crontab|crontab]] tutorial first and add the following for your root user:

<code>
@daily /root/rsnapbackup.sh
</code>

  * ''@yearly''
  * ''@annually''
  * ''@monthly''
  * ''@weekly''
  * ''@daily''
  * ''@hourly''
  * ''@reboot''